Lamp



FIG. 1 is a perspective top view from the left showing black shading representing a darker portion than the rest of the lamp;

FIG. 2 is a side view from the left;

FIG. 3 is a front view of the lamp showing black shading representing a darker portion than the rest of the lamp;

FIG. 4 is a side view from the right;

FIG. 5 is a rear view of the lamp;

FIG. 6 is a top view of the lamp; and,

FIG. 7 is a bottom view of the lamp.

The broken lines illustrate an environmental component of the lamp and form no part of the claimed design. 

The ornamental design for a lamp, as shown and described. 